JPH0318466U

JPH0318466U -

Info

Publication number: JPH0318466U
Application number: JP7636289U
Authority: JP
Priority date: 1989-06-30
Filing date: 1989-06-30
Publication date: 1991-02-22

Description

[Brief explanation of drawings]

第１図は本考案の膨張弁の実施例を示す断面図
、第２図は従来例の断面図である。１……ブロツク型膨張弁本体、１ａ，１ｂ，１
ｃ，１ｄ……管路接続口、１４……ダイアフラム
、Ｒ_１……温度室、Ｒ_２……低圧冷媒室、２０…
…感温筒。 FIG. 1 is a sectional view showing an embodiment of the expansion valve of the present invention, and FIG. 2 is a sectional view of a conventional example. 1...Block type expansion valve body, 1a, 1b, 1
c, 1d...Pipe connection port, 14...Diaphragm, _R1 ...Temperature chamber, _R2 ...Low pressure refrigerant chamber, 20...
...Thermosensitive cylinder.

Claims

[Scope of utility model registration request]

The valve body is provided with an outer temperature chamber and an inner low-pressure refrigerant chamber separated by a diaphragm, and a connection port for the evaporator outlet side and a connection port for the compressor inlet side are provided at both ends of the low-pressure refrigerant passage communicating with the low-pressure refrigerant chamber. A connection port for the inlet side of the evaporator and a connection port for the outlet side of the condenser are formed at both ends of the passageway, which has a valve seat for the expansion orifice in the middle, and a valve body for opening and closing the valve seat is provided with a spring. A temperature sensing tube is connected to the temperature chamber to detect the degree of superheat, and the diaphragm is displaced based on the degree of superheat captured by the temperature sensing tube. An expansion valve characterized by controlling the opening and closing operations of a valve body.